49 static void osdp_handle_in_byte(struct osdp_device *p, uint8_t *buf, int len)  in osdp_handle_in_byte()  argument
51 	if (p->wait_for_mark) {  in osdp_handle_in_byte()
53 		if (p->last_byte == 0xFF && buf[0] == 0x53) {  in osdp_handle_in_byte()
55 			ring_buf_put(&p->rx_buf, buf, 1);   /* put last byte */  in osdp_handle_in_byte()
57 			ring_buf_put(&p->rx_buf, buf, len); /* put rest */  in osdp_handle_in_byte()
58 			p->wait_for_mark = 0; /* Mark found. Clear flag */  in osdp_handle_in_byte()
60 		p->last_byte = buf[0];  in osdp_handle_in_byte()
63 	ring_buf_put(&p->rx_buf, buf, len);  in osdp_handle_in_byte()
70 	struct osdp_device *p = user_data;  in osdp_uart_isr()  local
77 				osdp_handle_in_byte(p, buf, len);  in osdp_uart_isr()
82 			len = ring_buf_get(&p->tx_buf, buf, 1);  in osdp_uart_isr()
91 	if (p->wait_for_mark == 0) {  in osdp_uart_isr()
93 		k_fifo_put(&p->rx_event_fifo, &p->rx_event_data);  in osdp_uart_isr()
100 	struct osdp_device *p = data;  in osdp_uart_receive()  local
102 	return (int)ring_buf_get(&p->rx_buf, buf, len);  in osdp_uart_receive()
108 	struct osdp_device *p = data;  in osdp_uart_send()  local
110 	sent = (int)ring_buf_put(&p->tx_buf, buf, len);  in osdp_uart_send()
111 	uart_irq_tx_enable(p->dev);  in osdp_uart_send()
117 	struct osdp_device *p = data;  in osdp_uart_flush()  local
119 	p->wait_for_mark = 1;  in osdp_uart_flush()
120 	ring_buf_reset(&p->tx_buf);  in osdp_uart_flush()
121 	ring_buf_reset(&p->rx_buf);  in osdp_uart_flush()
184 	struct osdp_device *p = &osdp_device;  in osdp_init()  local
193 	k_fifo_init(&p->rx_event_fifo);  in osdp_init()
196 	ring_buf_init(&p->rx_buf, sizeof(p->rx_fbuf), p->rx_fbuf);  in osdp_init()
197 	ring_buf_init(&p->tx_buf, sizeof(p->tx_fbuf), p->tx_fbuf);  in osdp_init()
200 	p->dev = DEVICE_DT_GET(DT_CHOSEN(zephyr_osdp_uart));  in osdp_init()
201 	if (!device_is_ready(p->dev)) {  in osdp_init()
207 	p->dev_config.baudrate = CONFIG_OSDP_UART_BAUD_RATE;  in osdp_init()
208 	p->dev_config.data_bits = UART_CFG_DATA_BITS_8;  in osdp_init()
209 	p->dev_config.parity = UART_CFG_PARITY_NONE;  in osdp_init()
210 	p->dev_config.stop_bits = UART_CFG_STOP_BITS_1;  in osdp_init()
211 	p->dev_config.flow_ctrl = UART_CFG_FLOW_CTRL_NONE;  in osdp_init()
212 	uart_configure(p->dev, &p->dev_config);  in osdp_init()
214 	uart_irq_rx_disable(p->dev);  in osdp_init()
215 	uart_irq_tx_disable(p->dev);  in osdp_init()
216 	uart_irq_callback_user_data_set(p->dev, osdp_uart_isr, p);  in osdp_init()
219 	while (uart_irq_rx_ready(p->dev)) {  in osdp_init()
220 		uart_fifo_read(p->dev, &c, 1);  in osdp_init()
222 	p->wait_for_mark = 1;  in osdp_init()
225 	uart_irq_rx_enable(p->dev);  in osdp_init()